US3659962A - Aspirator - Google Patents

Aspirator Download PDF

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Publication number
US3659962A
US3659962A US42775A US3659962DA US3659962A US 3659962 A US3659962 A US 3659962A US 42775 A US42775 A US 42775A US 3659962D A US3659962D A US 3659962DA US 3659962 A US3659962 A US 3659962A
Authority
US
United States
Prior art keywords
plate member
gas
orifices
open
orifice
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US42775A
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English (en)
Inventor
John Smith Zink
Hershel Goodnight
Robert D Reed
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zinklahoma Inc
Original Assignee
John Zink Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by John Zink Co filed Critical John Zink Co
Application granted granted Critical
Publication of US3659962A publication Critical patent/US3659962A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes
    • F23D14/64—Mixing devices; Mixing tubes with injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/14—Special features of gas burners
    • F23D2900/14642—Special features of gas burners with jet mixers with more than one gas injection nozzles or orifices for a single mixing tube

Definitions

  • the present invention relates to an aspirator assembly wherein the discharge of gas serves to develop low pressure conditions adjacent the flowing gas which serves to draw at mospheric air into the presence of the escaping gas and provide an air-gas mixture and the invention more specifically pertains to the release of the gas through a plurality of orifices so as to more fully utilize the energy conversion of the escaping gas streams.
  • Atmospheric aspirators are well known and are in general use.
  • the gas under pressure has in the past been released through a single orifice into the throat of the aspirating assembly.
  • the energy developed from the flowing gas is the result of the pressure at which the gas is stored and which is greater than atmospheric pressure.
  • the energy which creates the inspiration of air for mixture with the gas is derived from velocity at which the gas is released into the throat of the aspirator assembly. This velocity is the greatest at the exit end of the orifice and it is at this zone that there is a maximum potential for energy conversion in the inspiration of air.
  • An object of the present invention is to provide structure for the access of air to the area immediately adjacent the exit ends of a plurality of orifices through which the gas is discharged into the throat of an aspirator assembly so that there is less loss of energy than would be the case of a single orifice having a flow capability substantially equal to the plurality of orifices.
  • Another object of the invention is to provide an atmospheric aspirator assembly wherein the gas is released into the throat of the assembly through a plurality of orifices to provide improved air inspiration into the throat and which is increased by as much as 4% percent and with a decrease in the noise produced from I decibel in the 150 to 300 cycle range and with the noise reduced by as much as ll decibels in the frequency range of 1,200 to 4,800 cycles per second.
  • FIG. 1 is a longitudinal sectional view of an aspirator assembly embodying the invention.
  • FIG. 2 is a sectional view taken on the line 22 ofFIG. 1.
  • FIG. 3 is a sectional view taken on the line 3--3 of FIG. 1.
  • FIG. 4 is a fragmentary longitudinal section of a modification.
  • FIG. 5 is a sectional view taken on the line 55 of FIG. 4.
  • FIG. 6 is a longitudinal section of another form of structure for releasing gas through a plurality of orifices.
  • FIG. 7 is a sectional view taken on the line 7-7 of FIG. 6.
  • FIG. 8 is a sectional view taken on the line 8-8 of FIG. 6.
  • the invention is directed to an assembly for aspirating air into gas as it is discharged into the tubular portion where the gas and air are mixed and to an aspirator assembly wherein atmospheric air is available at the exit end of each of a plurality of orifices through which gas is discharged into the throat of an aspirator assembly.
  • FIG. 1 a tubular member 10 which provides an elongated chamber 11 in which the gas is mixed with air to provide an air-gas mixture.
  • the upstream end portion of the tubular member 10 is of flared construction to provide a trumpet-shaped mouth 12.
  • the interior surface 14 of the tubular member 10 is of cylindrical shape for a distance of four times the diameter measured downstream from the exit end of a discharge orifice for the gas. Thereafter the interior surface 15 flares outwardly to provide a frusto-conical surface to allow for expansion of the gas-air mixture.
  • Such portions of the aspirator assembly are of known construction and provides for the discharge of gas from a single orifice which is aligned with the axis of the tubular member 10. The movement of the gas provides energy for inspirating air into the mouth of the tubular member 10.
  • the present invention is directed to an aspirator assembly wherein the gas is released from a plurality of orifices for movement into the throat of the tubular member 10.
  • a pipe 16 extends from a source of gas under pressure and the gas moves into a conduit member 17 as shown in FIG. 1.
  • a plate element 18 may be welded or otherwise secured to the conduit member 17 and is attached to the tubular member 10 by a plurality of cap screws 19. The cap screws extend into threaded engagement with the flared mouth portion 12 of the tubular member 10 and the plate element 18 is maintained in spaced relationship from the upstream end of the tubular member 10 by spacer elements 21 which surround the cap screws 19.
  • a plurality of orifices are provided in the plate element 18 for the escape of gas from the chamber 22 formed in the conduit member 17.
  • orifices 23 are provided by noules 24 which are carried by the plate element 18 and are in communication with the chamber 22.
  • the nozzles 24 are circumferentially spaced from each other as shown in FIG. 2.
  • the velocity of the escaping gas is at a maximum adjacent the exit ends of the nozzles 24 and it is in this zone that there is a maximum potential for energy conversion for the inspiration of air.
  • Air at atmospheric pressure is accessible to the exit ends of the nozzles 24 and at the exit ends of the orifices 23 through the open area between the plate element 18 and the flared mouth portion 12 of the tubular member 10. Atmospheric air is available adjacent the exit ends of the orifices 23 and there is less loss of energy than would be the case with a single orifice having a flow capability equal to the plurality of orifices 23 shown in FIGS. 1 and 2.
  • the air is available at the exit ends of the orifices 23 and there is a greater quantity of energy produced by the flowing gas for the work involved in the inspiration of air.
  • the energy of the flowing gas is thus more efl'rciently utilized by as much as 4% percent over an aspirator assembly wherein the gas is released through a single orifice.
  • the dispersion of the orifices 23 within an area defined by the interior surface 14 of the tubular member 10 provides a reduction in the noise produced by the escaping gas and the inspiration of the air into the tubular member.
  • the gas from the supply pipe 16 is discharged into a conduit fitting 26 which has a plate-shaped portion 27 supported in spaced relationship from the upstream end of the tubular member 10.
  • the gas moves through the plate-shaped member 27 into a pipe portion 28.
  • One discharge orifice 33 is aligned with the axis of the tubular member 10.
  • a plurality of conduits 34 in communication with the interior of the pipe portion 28 terminate in discharge orifices 36 which are circumferentially spaced from each other around the axis of the assembly.
  • Air at atmospheric pressure is available at the exit ends of the discharge orifices 36 and the discharge orifice 33 where movement of the escaping gas is at a maximum velocity.
  • the air moves into the presence of the streams of escaping gas through the open areas between the spacer elements 21.
  • the energy of the flowing gas stream is utilized with maximum efficiency in the inspiration of air.
  • FIGS. 6 to 8 Another embodiment is shown in FIGS. 6 to 8 wherein the gas under pressure is supplied into a conduit fitting 37 equipped with a plate portion 41 supported in spaced relationship from the upstream end of the tubular member 10.
  • a pipeelement 42 receives the gas from the supply pipe 16.
  • the gas is delivered into a plurality of hollow radially disposed arms 46.
  • a plurality of orifices 47 are provided in each arm as shown in FIGS. 6 and 7. Air at atmospheric pressure is available at the exit ends of the discharge orifice 47 where the velocity of the escaping gas is at a maximum so that there is efficient utilization of the flow energy for inspirating air into the tubular member 10.
  • An aspirator comprising a tubular member having an open upstream end adjacent a substantially cylindrical throat and an integral outwardly flaring downstream portion, a plate member spaced longitudinally from the said open upstream end and secured thereto by circumferentially space cap screws and spacer elements to provide an otherwise open space between the said open end and the plate member, a centrally disposed orifice in the plate member, a nozzle disposed in said unenclosed space secured at one end to the plate member with its passageway communicating with the centrally disposed orifice, said nonle comprising a plurality of circumferentially spaced radially extending hollow arms which communicate with said passageway and have a plurality of orifices therein, the dispersion of the orifices in the hollow arms being within an area defined by the interior of the said throat, and means for passing gas under pressure through the orifice in the plate member.
  • An aspirator assembly comprising a tubular member having a substantially cylindrical throat adjacent an open upstream end, means comprising a plate member spaced longitudinally from said open end and having a centrally disposed orifice, a conduit secured at one end to the plate member about the said orifice and terminating in the space between the plate member and the said open end in a plurality of circumferentially spaced radially extending hollow arms, a plurality of orifices in said arms which are adapted to direct gas into said open end, said tubular member and conduit having a common axis, and means for passing gas under pressure through the conduit, the space between said open end and said plate member being substantially unenclosed about said arms whereby air under atmospheric pressure is available for inspiration as the gas streams move from the orifices in the hollow arms towards the said open end.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
US42775A 1970-06-02 1970-06-02 Aspirator Expired - Lifetime US3659962A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4277570A 1970-06-02 1970-06-02

Publications (1)

Publication Number Publication Date
US3659962A true US3659962A (en) 1972-05-02

Family

ID=21923683

Family Applications (1)

Application Number Title Priority Date Filing Date
US42775A Expired - Lifetime US3659962A (en) 1970-06-02 1970-06-02 Aspirator

Country Status (6)

Country Link
US (1) US3659962A (de)
JP (1) JPS5131532B1 (de)
CA (1) CA931186A (de)
DE (1) DE2126500A1 (de)
FR (1) FR2095661A5 (de)
GB (1) GB1343943A (de)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768394A (en) * 1971-06-18 1973-10-30 Powlesland Eng Ltd Device for producing dynamic flow in fluids to form curtains of the fluid
US3768257A (en) * 1971-08-17 1973-10-30 Brown Eng Co Inc Momentum compression ramjet engine
US3773075A (en) * 1970-11-30 1973-11-20 Airoil Burner Fuel burner assemblies
US3865136A (en) * 1971-04-29 1975-02-11 Eke Verschuur Oil/water pipeline inlet with oil supply via a large chamber
US4149828A (en) * 1976-01-15 1979-04-17 Industrie Patente Anstalt Apparatus for removing dust from aeriform substances
US4208195A (en) * 1977-05-18 1980-06-17 Societe Nationale Elf Aquitaine (Production) Device for dispersing a residual gas comprising a plurality of injection nozzles
US4332529A (en) * 1975-08-11 1982-06-01 Morton Alperin Jet diffuser ejector
WO1983000913A1 (en) * 1981-09-11 1983-03-17 Advanced Mechanical Tech High efficiency gas burner
US4842777A (en) * 1987-08-07 1989-06-27 E & M Lamort Pressurized mixing injector
US5624609A (en) * 1994-11-28 1997-04-29 E & M Lamort Enhancements to the air injection devices in a paper pulp flow for de-inking thereof
US5628623A (en) * 1993-02-12 1997-05-13 Skaggs; Bill D. Fluid jet ejector and ejection method
US6004176A (en) * 1998-04-21 1999-12-21 Air Cruisers Company Aspirator assembly
US6017195A (en) * 1993-02-12 2000-01-25 Skaggs; Bill D. Fluid jet ejector and ejection method
WO2001098713A1 (en) * 2000-06-21 2001-12-27 Honeywell International Inc. Fuel injector for low emissions premixing gas turbine combustor
US6638059B1 (en) * 1998-12-30 2003-10-28 Total Raffinage Distribution S.A. Burner-type apparatus and fuel combustion method
US6652268B1 (en) 2003-01-31 2003-11-25 Astec, Inc. Burner assembly
US7044730B1 (en) * 1998-12-30 2006-05-16 Total Raffinage Distribution S.A. Device for improving gas fuel burning
WO2007113130A1 (de) * 2006-03-30 2007-10-11 Alstom Technology Ltd Brenneranordnung, vorzugsweise in einer brennkammer für eine gasturbine
US20080280243A1 (en) * 2003-10-02 2008-11-13 Malcolm Swanson Burner assembly
CN111492179A (zh) * 2017-12-21 2020-08-04 Bsh家用电器有限公司 用于家用器具的燃气燃烧器的喷射器装置、燃气燃烧器和家用器具
US20230089261A1 (en) * 2021-09-17 2023-03-23 Doosan Energbility Co., Ltd. Combustor and gas turbine having same

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3408372A1 (de) * 1984-03-08 1985-09-19 Füllpack Dipl.-Brauerei-Ing. Dieter Wieland, 4000 Düsseldorf Einrichtung zur behandlung einer stark schaumbildenden fluessigkeit mit einem gas
DE4414272A1 (de) * 1994-04-23 1995-10-26 Erz & Kohleflotation Gmbh Vorrichtung zur Begasung einer Suspension
US6227846B1 (en) 1996-11-08 2001-05-08 Shrinkfast Corporation Heat gun with high performance jet pump and quick change attachments
ATE232284T1 (de) * 1996-11-08 2003-02-15 Shrinkfast Corp Heizpistole mit hochleistungsstrahlpumpe und schnellwechselbaren teilen
DE10163724A1 (de) * 2001-12-21 2003-07-03 Stolco Stoltenberg Lerche Gmbh Dampfinjektor

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US838184A (en) * 1905-10-13 1906-12-11 Nathan S V Hamel Force-draft.
GB123059A (en) * 1918-02-04 1919-05-01 Albert Delas Improvements in or relating to Steam Ejectors.
US1580177A (en) * 1921-05-13 1926-04-13 C H Wheeler Mfg Co Method of and apparatus for compressing fluid
US2068748A (en) * 1934-07-26 1937-01-26 Ingersoll Rand Co Thermo-compressor
US2074480A (en) * 1936-03-18 1937-03-23 Ingersoll Rand Co Thermocompressor
US2790595A (en) * 1950-09-20 1957-04-30 Metallgesellschaft Ag Steam jet apparatus
US3572974A (en) * 1969-04-04 1971-03-30 Sargent Industries Aspirator apparatus for bag inflation systems

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US838184A (en) * 1905-10-13 1906-12-11 Nathan S V Hamel Force-draft.
GB123059A (en) * 1918-02-04 1919-05-01 Albert Delas Improvements in or relating to Steam Ejectors.
US1580177A (en) * 1921-05-13 1926-04-13 C H Wheeler Mfg Co Method of and apparatus for compressing fluid
US2068748A (en) * 1934-07-26 1937-01-26 Ingersoll Rand Co Thermo-compressor
US2074480A (en) * 1936-03-18 1937-03-23 Ingersoll Rand Co Thermocompressor
US2790595A (en) * 1950-09-20 1957-04-30 Metallgesellschaft Ag Steam jet apparatus
US3572974A (en) * 1969-04-04 1971-03-30 Sargent Industries Aspirator apparatus for bag inflation systems

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3773075A (en) * 1970-11-30 1973-11-20 Airoil Burner Fuel burner assemblies
US3865136A (en) * 1971-04-29 1975-02-11 Eke Verschuur Oil/water pipeline inlet with oil supply via a large chamber
US3768394A (en) * 1971-06-18 1973-10-30 Powlesland Eng Ltd Device for producing dynamic flow in fluids to form curtains of the fluid
US3768257A (en) * 1971-08-17 1973-10-30 Brown Eng Co Inc Momentum compression ramjet engine
US4332529A (en) * 1975-08-11 1982-06-01 Morton Alperin Jet diffuser ejector
US4149828A (en) * 1976-01-15 1979-04-17 Industrie Patente Anstalt Apparatus for removing dust from aeriform substances
US4208195A (en) * 1977-05-18 1980-06-17 Societe Nationale Elf Aquitaine (Production) Device for dispersing a residual gas comprising a plurality of injection nozzles
WO1983000913A1 (en) * 1981-09-11 1983-03-17 Advanced Mechanical Tech High efficiency gas burner
US4419074A (en) * 1981-09-11 1983-12-06 Advanced Mechanical Technology, Inc. High efficiency gas burner
US4842777A (en) * 1987-08-07 1989-06-27 E & M Lamort Pressurized mixing injector
US5931643A (en) * 1993-02-12 1999-08-03 Skaggs; Bill D. Fluid jet ejector with primary fluid recirculation means
US6017195A (en) * 1993-02-12 2000-01-25 Skaggs; Bill D. Fluid jet ejector and ejection method
US5628623A (en) * 1993-02-12 1997-05-13 Skaggs; Bill D. Fluid jet ejector and ejection method
US5624609A (en) * 1994-11-28 1997-04-29 E & M Lamort Enhancements to the air injection devices in a paper pulp flow for de-inking thereof
US6004176A (en) * 1998-04-21 1999-12-21 Air Cruisers Company Aspirator assembly
US7044730B1 (en) * 1998-12-30 2006-05-16 Total Raffinage Distribution S.A. Device for improving gas fuel burning
US6638059B1 (en) * 1998-12-30 2003-10-28 Total Raffinage Distribution S.A. Burner-type apparatus and fuel combustion method
WO2001098713A1 (en) * 2000-06-21 2001-12-27 Honeywell International Inc. Fuel injector for low emissions premixing gas turbine combustor
US6652268B1 (en) 2003-01-31 2003-11-25 Astec, Inc. Burner assembly
US20080280243A1 (en) * 2003-10-02 2008-11-13 Malcolm Swanson Burner assembly
WO2007113130A1 (de) * 2006-03-30 2007-10-11 Alstom Technology Ltd Brenneranordnung, vorzugsweise in einer brennkammer für eine gasturbine
CN111492179A (zh) * 2017-12-21 2020-08-04 Bsh家用电器有限公司 用于家用器具的燃气燃烧器的喷射器装置、燃气燃烧器和家用器具
CN111492179B (zh) * 2017-12-21 2023-08-29 Bsh家用电器有限公司 用于家用器具的燃气燃烧器的喷射器装置、燃气燃烧器和家用器具
US20230089261A1 (en) * 2021-09-17 2023-03-23 Doosan Energbility Co., Ltd. Combustor and gas turbine having same
US11846427B2 (en) * 2021-09-17 2023-12-19 Doosan Enerbility Co., Ltd. Gas turbine combustor with fuel nozzles shaped with a diameter decreasing and increasing toward a rear side thereof

Also Published As

Publication number Publication date
CA931186A (en) 1973-07-31
JPS5131532B1 (de) 1976-09-07
DE2126500A1 (de) 1971-12-16
FR2095661A5 (de) 1972-02-11
GB1343943A (en) 1974-01-16

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